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Release Announcement: Online POrtal for Semantic Services (OPOSSum)

From: Ulrich Küster <Ulrich.Kuester@uni-jena.de>
Date: Tue, 20 May 2008 17:26:11 +0200
Message-ID: <4832ED93.4080004@uni-jena.de>
To: W3C SWS Testbed Group <member-xg-swsc@w3.org>, Public W3C SWS Testbed Group <public-xg-swsc@w3.org>

Hash: SHA1

~            We are happy to announce the first release of

~            OPOSSum - Online POrtal for Semantic Services

~                http://fusion.cs.uni-jena.de/OPOSSum

*What is OPOSSum about?*

Research in Semantic Web Services (SWS) has received a lot of attention
within the last years. Despite of significant R&D achievements, too
little effort is spent towards the comparative evaluation of SWS
formalisms and frameworks so far[1]. This is a critical blocker for the
future development and industrial adoption of the proposed technologies.
In the last two years, promising international efforts like the
- - SWS-Challenge http://sws-challenge.org/
- - W3C SWS Testbed Incubator Group http://www.w3.org/2005/Incubator/swsc/
- - S3 Contest http://www-ags.dfki.uni-sb.de/~klusch/s3/
have been launched to establish standard evaluations for SWS and improve
in this direction.

However, one of the problems that has proven to be difficult to overcome
is the lack of high-quality test data, i.e. standard SWS test
collections across the various SWS formalisms. These are not yet readily
available in sufficient quality and quantity [2][3]. Because of the
effort involved and to avoid any unintended bias, standard test
collections can only be developed collaboratively by the community as a
whole. It is the goal of the OPOSSum Portal to provide the necessary
infrastructure to do so.


*How does OPOSSum work?*

OPOSSum is an open source web-application on top of a structured
database of services and service descriptions. It features a wiki-like
collaboration model and is open source (licensed under GPL). Everybody
is invited to go online and to share their test data or to edit and
improve the existing data. To this end, the existing collections OWLS-TC
2.2 and SWS-TC 1.1 as well as some other data have been integrated with
OPOSSum. OPOSSum currently lists 1383 descriptions for 1297 services


*How can I use OPOSSum?*

OPOSSum is meant to be a place to collect fictitious or real service
descriptions for evaluation and testing purposes. Feel free to use the
available data according to your needs.

But above all, please consider to help building up a standard test
collection by sharing your semantic service descriptions and improving
the current collections. If you encounter inconsistencies or faults in
existing data, consider to fix those problems online so that everybody
can benefit. If you create test data to for your algorithm or tool,
consider to upload it to OPOSSum so that other people can reuse your work.

If you feel, an important feature is missing in OPOSSum or that it could
be improved to serve the community better, please do not hesitate to
contact us or consider to implement and contribute the missing feature
yourself. All data and the sources of OPOSSum are available online:


*Related Efforts*

The SWS-TC Wiki http://www-ags.dfki.uni-sb.de/swstc-wiki serves a
similar purpose as OPOSSum but is a more lightweight approach. If you
are interested in OPOSSum, you might be interested in SWS-TC Wiki as well.

Thank you,

Ulrich Küster
Birgitta König-Ries


[1] lrich Küster, Holger Lausen, Birgitta König-Ries
Evaluation of Semantic Service Discovery - A Survey and Directions for
Future Research
Post-Proceedings of the 2nd Workshop on Emerging Web Services Technology
(WEWST07) in conjunction with the 5th IEEE European Conference on Web
Services (ECOWS07), Halle (Saale), Germany , November 2007
[2] Matthias Klusch, Zhiguo Xing
Semantic Web Services in the Web: A Preliminary Reality Check
Proceedings of the First International Joint Workshop SMR2 on Service
Matchmaking and Resource Retrieval in the Semantic Web at the 6th
International Semantic Web Conference(ISWC2007), Busan, South Korea,
November 2007
[3] Ulrich Küster, Birgitta König-Ries
On the Empirical Evaluation of Semantic Web Service Approaches: Towards
Common SWS Test Collections
to appear in Proceedings of the 2nd IEEE International Conference on
Semantic Computing (ICSC2008), Santa Clara, CA, USA, August 2008

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